Answer:
A is proportional
B and C are NOT proportional
Step-by-step explanation:
First, simplify 588 and 60:
588 divided by 6
60 divided by 6
= 98
 10
Simplify them again by dividing them both by 2
= 49
  5
Let's look at A:
441 and 45
Simplify by dividing by 9
= 49
  5
It's pretty obvious that A is proportional because the simplified values are exactly the same.
Next, let's check B:
215 Â and 25
Simplify by dividing by 5
= 43
  5
Now that its simplified you can compare
43 Â is smaller than 49
5 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 5
B is not proportional
Finally, let's check C:
649 and 110
Simplify by dividing by 11
= 51
 10
Make 51 and 49 have the same denominator so we can compare them
     10     5
51 can stay the same because 5 times 2 equals 10
10
49 times 2
5 times 2
= Â 98
  10
Now that the denominators are the same we can compare
51 is much smaller than 98
10 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 10
Therefore, C is also not proportional.
Hope that helps :D
